The pictures of the dead staghorn and 1 elkhorn. These 2 ferns were first to die firstly they had scale black spots so I treated that with white oil. Both the ferns died. . I don't think the scale completely killed the ferns but something did.
1 pick has tiny little holes in the cover also has a bit of scale. Reluctant to use white oil again as I don't think it helped my two dead ferns.
2 pick mostly scale
What does spider mite look like? These ferns seem to be very hardy but unfortunately I still seem to be able to kill them.